Year Percent 2000 99.0095 2001 99.05184 2002 99.09418 2003 99.13653 2004 99.17887 2005 99.22121 2006 99.26355 2007 99.30589 2008 99.34824 2009 99.39058 2010 99.43292 2011 99.47526 2012 99.51761 2013 99.55995 2014 99.60229 2015 99.64463 2016 99.68697 2017 99.72932 2018 99.77166 2019 99.814 2020 99.85634 2021 99.89869 2022 99.94103